Fbedebick c



` Jan- 7,1930- A F, c. HEYLMAN Re. 17,556

sToPcocK I original Filed oct. 11. 1917 [wrt/vree.- Freder/ck C. Hey/man) Reissued Jara.v 7, 1930 PATENT'oFFl-CE FBEDEBIGK C. HEYLMAN, OF MARTINEZ, CYALDFOBNIA s'rorocx Original Ill'o. 1,370,745, dated March 8, 1921, Serial No. 196,000, filed October 11, 1917. Application for reissue led Aug-ust 12, 1929.. Serial No. 385,394.

This invention relates to stock-cocks or shut-off valves, and the primaryobject of the invention isv to provide an improved con-l struction for valves of this character Whereby leakage will be prevented when the valve is used in c onnection with either steam or liquid. l

One of the objects of the invention is to provide an improved valve of this character that may be easily disengaged from its valve seat when the tendency of the valve proper is to adhere to seat as when the valve is 'employed with liquid which tends to cause the valve to/ tightly cling to its seat as when acid or similar liquids are employed.

The invention has for a further objlect to provide a device havinga longitudina y ad- )ustable tapered valve carrying oppositelyr projecting valve stems whereby the valve may he properly adjusted from either end ofthe valve casing; which include packing boxes at both ends of the said valve whereby leakage-from either end of the'valve casing can be prevented without changing the relative -position of'the valve with respect to its seat; and which may be moved to various positions and made water-tight so that an eifective seatingY of the valve will be maintained at all times.

A further object of the invention is to provide a valve of this character which -will consist of comparatively few parts and is simple in construction, but durable and especlally adapted to withstand the rough usage to which devices of this kind are ordinarily subjected.

For a full description of the invention and the advantages and merits thereof, reference is to be had to the following detailed descriptionland the accompanying drawing wherein is illustrated the preferred form of the in` vention and, in which-,-

Figure 1 is a vertical section through the valve body showing the invention in assembled position. 4

Fig. l2 is a transverse section, and

Fi 3 is a bottom plan view of the valve mem er.

Referring to the drawing, wherein is illus-l trated the preferred form of the invention and in whichylike characters of reference in dicate corresponding parts throughout the several views, the valve casing 1 is provided with the oppositely projectlng portions 2 and 3 which form thev inlet and outlet, for the valve and each of these projections have flanges 4 whereby the valve may be attached to the ends of piping for arranging the valve 1n connection with a system of pipes having steam or` liquid conducted through their in terlors. As shown in Fig. 2, the main portion of the valve body is tapered and has an lnterior tapered bore 5 extendin through the valve body. j The upper end othe Valve body has an enlarged recess 6 which forms a-packing box while a comparatively smaller recess 7 is formed in the opposite end ofthe valve body. Communication between'these two'recesses 6 and 7 is established through the tapered bore 5 and a tapered plug lvalve 8 -is rotatably mounted in this tapered bore 5.

Each of the recessesl 6 and 7 is slightly llarger than the 'corresponding end of the tapered bore as shown to' advantage in Figs. 1 and 2. The plug valve 8 is slightly longer than the bore 5 so that normally the ends of the plug are projected slightly into each of the recesses 6 and 7.

A packing gland 9 is extended into one of the recesses-at one end of the Valve body and this gland has a flange 10 provided with openings 11 for the reception of the ends of studs 12 screw-threaded into lscrew-threaded recesses in the end of the valve body. Nuts 13 are adapted for reception on the ends of the studs whereby the gland may be forced into the recess 6. Interposed between the large end of the tapered plug valve 8 and the adjacent'end of the gland is a series of layers of suitable packing, which, in the present instance, is shown as including alternate layers of hard and soft packing material and taken in combination v'with the gland, provides an direct contact with the gland 9 while one of the portions of packing material 15 is in 86 closed position.V

directcontact with the corresponding end of the plug 8. This construction permits a portion of the loose asbestos packing to be pressed'into theannular space 16 around the '5 extreme end of the plug in the bottom of thev recess 6 when a pressure is applied to the gland.

The opposite recess 7 is providedwith'a similar elastic thrust bearing for the opposite lo end of the plug 8 and comprises packing material which includes the relatively smaller packing disks 17 and the loose packing material 18,one layer of thel latter being in engagement with the smaller end of the plug 15 so that itv may be pressedA into the annular space 19 around the said end. This packing within the recess 7 is held in position by they gland 20 which is of a formation similar to the gland 9, being slightly smaller in size.

20 Studs 21 are provided in this end of the valve bod and the studs project through openings in tlle'flange 22 of the gland and receive a'nut 23 to press the gland into position within the recess 7 for tightly packing the packing ma- 25 terial within therecessa Each end of theplu'g 8 is providedwith a stem indicated at 24- and 25 and each -stem projectsv through the elastic` thrust bearings whereby the terminal of eachA stem is extended beyond'the valve casing and has a square portion for the reception of a wrench or the like, whereby the valve may be turned from either end. A passageway 26 in the plug 8 permits the plug to be. moved to open or -The tapered bore 5 forms a valve seat with which the plug valve contacts to provide a water-tight joint. It will be apparent that continued use of the valve ,will have a tend- '4o ency'to reduce the effectiveness of ti htly closing the bore and at such times. it will be necessary to longitudinally adjust the plug valve for lacing it in the proper position to tightly old the bore. When this is dei '415 sired it is simply necessary toturn either the nuts 13er 23 to more compactly press the packing in the corresponding end of the body.

en one glaid is pressed inwardly to tightly pack the packing` material the, opposite 60 gland fwill be correspondingly loosened to permit the packing in this end of the valve body to release its pressure on the end of the plug valve thus accomplishing the longitudina1 ad 'ustment of the valve. When the valve, or any reason, sticks or becomes immovable and tightly adheres toits seat, it is merely necessaryto tap the end 27 of the stem 24 with a hammer or other suitable instrument to loosen the valve away in its'seat or 00' `should the valve become loose in its seat a tap- When the valve becomesworn after continued use, longitudinal adjustment may be accomplished as above stated and the alternate layers of compact and loose packing will tightly fill the packing boxesv formed by` the recesses 7 and 6 so that a water-tightvalve is provided at all times.

From the foregoing it will be observed thata very simple and durable stop-cock has been provided, the details of which embody the preferred form. I desire to be understood, however, that slightchanges may be made in the details of construction without departing lfrom the spirit of the invention or the scope of the claims hereunto appended.

What is claimed is :--A

1. A high pressure cock comprising: a body having openings therethrough in two directions, one of which forms a valve seat and recesses adjacent the ends of said valve seat; a revoluble plug fitting said seat, and having flat shoulders and stems at both ends; packing at both ends of said valve plug, said packing resting in said recesses and engaging said flat shoulders of said revoluble plug; ilange'd collars for engaging said packing and forcingsame against the flat, shoulders of said plug whereby said plug by the proper proportioning of the pressures of thepackings thereagainst will be held in proper engagement with said valve seat; means 'for holding said flanged collars in position, the l stems extending through both of said collars. r

2. A cock comprising: a body having-two openings therethrough in two directions, one of which forms a conical valve seat, and having recesses formed at the opposite ends of saidA valve seat; a revoluble conical plug lltting said seat and having flat shoulders formed at the ends thereof; stems extending from the opposite ends of vsaid plug and through said recesses, said stems being concentric with the axis of said plug; packing resting in both of said recesses and engaging said shoulders; and flanged collars for engaging said packings for forcing same against said shoulders of said plug whereby said plug by the proper proportioning'ofthe pressures vof the packings thereagainst will be held in proper engagement with said valve seat, said flanged collars having openings through which said stems extend.

3. A cock comprising: a body having two openings therethrough in'two directions, one

J'of which formsa conical valve seatg-and having recesses formed at the opposite 'ends of said valve seat; a revoluble conical pluffitting said seat and having flat shoulders" formed at the ends thereof; stems extending from the opposite ends of said plug and through said recesses, said [stems being concentric with the axis of said plu packing resting in both of said recesses an engaging said shoulders, said packing' being resilient so that the application ofa sharp blow onY said stem extending from vthe smaller end of said plug causes said packing to yield sufficiently to free said plu from said valve seat should it become stuc and ianged collars for engaging said packings for forcing same against said shoulders of said plug whereby said plug by the proper proportioning of the pressures of the packings thereagainst will be held in proper engagement with said valve seat, said flanged collars havingdopenings through which said stelns exten 4. A cock comprising: a body having two openings therethrough in two directions, one of which forms a conical 'valve seat, and having recesses forlnedat the opposite ends of said valve seat; a revoluble conical plug fitting said seat and having flat shoulders formed at the ends thereof; stems extending from the opposite ends of said. plug and through said recesses, said stems being concentric with the axis of said plug; packing restingin both of said recesses and engaging said shoulders, said packing being resilient so that the application of a sharp blow on said stem extending from the smaller end of said plug causes said packing to yield sufficiently to free said plug from said valve seat should it become stuck; and flanged collars for engaging said packings for forcing same against said shoulders of said plug whereby said plug by the proper proportioning of the pressures of the packingsthereagainst willr e held in proper engagement with said valve seat, said flanged col ars havin openings through which said stems exten said stem projecting from .the larger en'd of said plug having means whereby said plug may be rotated, and said stem extending from the smaller end of said plug being adapted forreceiving blows for axially moving said plug to free it from said valve seat should it become stuck. f

5. A high pressure stop-cock comprising: a body having openings therethrough in two directions, one of which is ground to form a valve seat; a revoluble plug fitting said seat and having flat shoulders and stems at both ends; elastic packing forming thrust bearings at. both ends of said revoluble plug; fianged collars at both ends of said revoluble plug for holding said elastic thrust bearings in place against the fiat shoulders of sald plug; and means for securing said flanged collars in position, the stems of the revoluble plug extending through both of said fianged collars. y

6. A high pressure stop-cock comprising: a body having openings therethrough in two directions, one of which is ground toiorm' a valve seat; aA revoluble' plug fitting said seat and 'having flat shoulders and stems at both ends;` elastic packing forming thrust bear- O's` at both ends of said revoluble plug;

ing

flanged collars at,both endsof said revoluble plug for holding said elastic thrust bearings in place against the flat shoulders of said plug; and means for securing the flanged collars to said body, said means being operable against said flanged collars so as to obtain the desired' elastic pressure of said elastic thrust bearings against said flat shoulders of said plug, said stems of said revoluble plug extending through both of said flanged collars.

7. A cock comprising'za body having two openings therethrough in two directions, one of which forms a conical valve seat, and havin recesses formed at the opposite ends of said valve seat; a revoluble conical plug fitting said seat and having fiat shoulders formed at .the ends thereof; stems extending from the opposite ends of said plug and through said recesses, dsaid stems being' concentric with the axis of said plug; elastic -packing'forming thrust bearings `resting in both of said recesses and engaging said shoulders; and flanged collars for engaging said elastic thrust bearings for compressing same against said shoulders of said plug whereby the elasticity of said elastic thrust bearings by the proper proportioning of the pressures thereagainst will hold said plug in proper extend.

8. A cock comprising: a body having two openings tlienthrough in two directions,one of which forms a conical valve seat, and having recesses formed at the opposite ends of said valve seat; a revoluble conical plug fitting said seat and having fiat shoulders formed at the ends thereof; stems `extending from the opposite ends of said plug and through said recesses, said stems being concentric with the axis of said plug; elastic packing forming thrust bearings resting in both of said recesses and engaging-said shoulders, said elastic thrust bearings being sufliciently elastic that the applicatlon of a sharp blow on said stem extending from the smaller end of said plug causes the opposite elastic thrust bearin to yield suiiciently to permit said plug to e freed from said valve s 'eat should'it become stuck; and fianged collars for engaging `said elastic thrust bearings for compressing same against said shoulders of said plug whereby the elasticity of said elastic thrust bearings by the proper proportioning of the pressures thereagainst will hold said plug in roper engagement withsaid valve seat, saidicollars having openings through which' said stems extend..

cock comprising: a body having two l openings therethrough'in two directions, one of which forms a conical valve seat, and hav- -ing recesses formed at the opposite ends of said valve seat; a revoluble conical plug fit-v from the opposite ends of said plug and through said recesses, said stems being concentric with the .axis of said plug; elastic packingforming thrust bearings resting in both of said recesses and engaging said 5 shoulders, said elastic thrust bearings being sufficiently elastic that the ap licationof a sharp blow onv said stem .exten ing from 4the smaller end of said plug causes the opposite elastic thrust bearing to yield suiiiciently to permit said plug to be freed from said valve seat should it become stuck; and flanged colf lars for engaging said elastic thrust bearings for compressing same against said shoulders of 'said plug wiereby ythe elasticity ofV said elastic thrust bearings by the proper proportioning of the pressures` thereagainst will Vhold said plug in proper engagement with 'said valve seat, said collars having openings through which said stems extend, said stem projecting Afrom; the larger end ofsa'id plug having means whereby said plug may be roi tated, and said `stem extending from the smaller end of said plug being adapted for receiving blows for axially moving said plug to free it from said valve seat should itbecome stuck. V l

In testimony whereof I have hereunto set a l my hand at` Amsterdam, Netherlands, this 30 l 10th day of Julg, 1929.V FRE ERICK C.' HEYLMAN. 

